Node.js – dnsPromises.resolveAny() Method

The dnsPromises.resolveAny() method uses the DNS protocol to resolve all records (this is also known as ANY or * query). The promise is resolved with an array containing various types of records.

Syntax

dnsPromises.resolveAny(hostname)

Parameters

• hostname - This parameter takes input for the hostname to be resolved.

Example 1

Create a file with the name "resolveAny.js" and copy the following code. After creating the file, use the command "node resolveAny.js" to run this code, as shown in the example below −

// Node.js program to demonstrate the
// dnsPromises.resolveAny() method

// Accessing promises object from dns module
const dns = require('dns');
const dnsPromises = dns.promises;

// Calling dnsPromises.resolveAny() method
dnsPromises.resolveAny('tutorialspoint.com').then((response) => { 
   console.log("records :", response);
});

Output

C:\home
ode>> node resolveAny.js
records: [
{"address":"95.217.74.146","ttl":600,"type":"A"},
{"exchange":"alt2.aspmx.l.google.com","priority":5,"type":"MX"},
{"exchange":"alt1.aspmx.l.google.com","priority":5,"type":"MX"},
{"exchange":"aspmx.l.google.com","priority":1,"type":"MX"},
{"exchange":"alt4.aspmx.l.google.com","priority":10,"type":"MX"},
{"exchange":"alt3.aspmx.l.google.com","priority":10,"type":"MX"},
{"value":"pdns13.domaincontrol.com","type":"NS"},
{"value":"pdns14.domaincontrol.com","type":"NS"},
{"entries":["google-site-verification=-RNrP1jBNMarh7tMQEgXtlBVUi000DUph-h8H7uSaQ"],"type":"TXT"},
{"entries":["google-siteverification=S2zMIBQyc6WxHPiOdUzkWYvx_FKbf03xDOsI8OgG20A"],"type"
:"TXT"},
{"entries":["v=spf1 ip4:116.202.79.150 include:_spf.google.com -
all"],"type":"TXT"},
{"nsname":"pdns13.domaincontrol.com","hostmaster":"dns.jomax.net"
,"serial":2021051700,"refresh":28800,"retry":7200,"expire":604800
,"minttl":600,"type":"SOA"}
]

Example 2

// Node.js program to demonstrate the
// dnsPromises.resolveAny() method

// Accessing promises object from dns module
const dns = require('dns');
const dnsPromises = dns.promises;

// Calling dnsPromises.resolveAny() method
dnsPromises.resolveAny('localhost').then((response) => {
   console.log("Address :", response);
});

Output

C:\home
ode>> node resolveAny.js
Address : [
   { address: '127.0.0.1', ttl: 0, type: 'A' },
   { address: '::1', ttl: 0, type: 'AAAA' }
]

Mayank Agarwal

e

Updated on: 24-Nov-2021

107 Views

Kickstart Your Career

Get certified by completing the course

Get Started